One key chording system for an electronic keyboard instrument

Details One key chording system for an electronic keyboard instrument One key chording system for an electronic keyboard instrument

1975-06-18

1977-01-04

Weldon, Ulysses

Music

Instruments

84 103, 84DIG22, G10H 100

Patent

active

040006743

ABSTRACT:
A one key chording system for an electronic keyboard instrument of the type in which a single contact keyboard for DC keying of tone signals is employed. A primary keying signal from the single contact keyboard operates one of a plurality of chord gates to produce a chord keying signal which is translated by one of a set of chord logic units into secondary keying signals. The primary and secondary keying signals operate keyers for tone signals corresponding to a musical chord. An inhibit circuit prevents chord gates from responding to secondary keying signals. A mode control circuit switches the single key chording system off to return the instrument to normal operation with multiple key chording.

REFERENCES:
patent: 3708604 (1973-01-01), Hebeisen et al.
patent: 3725560 (1973-04-01), Robinson et al.

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